Castanet



FIG. 1 is a right side and top perspective view of a castanet showing my new design;

FIG. 2 is a left side and bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a castanet, as shown. 